MC-13964: Resolve PR Merge conflict

- Resolved test generation failured caused by double import

Author: Hwashiang Yu

app/code/Magento/PageBuilder/Controller/ContentType/Preview.php

@@ -8,7 +8,6 @@
 
 namespace Magento\PageBuilder\Controller\ContentType;
 
-use Magento\Framework\App\Action\HttpPostActionInterface;
 use Magento\Framework\Controller\ResultFactory;
 use Magento\Framework\App\Action\HttpPostActionInterface;